Get nutrition facts in common serving sizes: 100g, 1 half cup, 1 potato large, 1 potato medium, 1 potato small. How Many Calories are in a Jacket Potato? You'd need to walk 40 minutes to burn 142 calories. Nevertheless, 100 g of potatoes, boiled with skin are worth 165 calories. There are 142 calories in 1 potato [7 oz with skin, 2" x 4.5"] (5.4 oz) of Potatoes, baked, flesh only. View calories and nutrition info per 1 Av Potato/300g of Potatoes and see how many calories are in 100g of Potatoes and its nutrition information. The favorite choice for the term "Potatoes" is 1 medium White Potato (Flesh and Skin) which has about 150 calories.Calorie and nutritional information for a variety of types and serving sizes of Potatoes … Potatoes Calories and Nutrition per Serving (1 Serving=1 Av Potato/300g) Calories: 225: grams of Protein: 5.9: grams of Carbohydrate: 50.5: Jacket potatoes recipe is almost similar to a baked one. However, skin itself takes almost a half of this number. Visit CalorieKing to see calorie count and nutrient data for … How many calories in Potatoes? Calories, fat, protein, and carbohydrate values for for Potato and other related foods. Therefore, flesh only is worth 87 kcal, which is an acceptable option.